Cervical traction unit



FIG. 1 is a front perspective view of a cervical traction unit, showing my new design;

FIG. 2 is a side elevational view thereof, the broken line showing of the head being for illustrative purposes only and forming no part of the claimed design;

FIG. 3 is a rear elevational view thereof; and,

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a cervical traction unit, as shown and described. 